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Tutorial SPS - Sabertooth Packet Serial PID motor driver sketch w/SoftStart

Discussion in 'SimTools compatible interfaces' started by BlazinH, Nov 10, 2016.

Page 24 of 28
  1. TSHracing

    TSHracing New Member

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    Yes I even ran a simple test sketch that does simple math and montiored that on the serial monitor to see if comunicating with the borad is good.
    I have one question about the UDP port setting in the ini file, where can find that (if it needs to be changes?)
    TSHracing, May 12, 2020
    #461
  2. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    AFAIK you do not need to change the UDP port. Try another USB port, do not use usb hubs, unplug all other not needed usb devices, set all parameters in the device manager correctly, it should work without changing any parameters of SMC.
    Pit, May 12, 2020
    #462
  3. thecures

    thecures New Member

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    hello .... the syren 50 is not mentioned .... how should i set the dip-switch?...tks
    thecures, Jun 13, 2020
    #463
  4. FredBasset

    FredBasset Member Gold Contributor

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    Ignore below, worked it out. :)

    Can I ask a simple question, before I get into this too much. I have everything wired up on the bench and I think its working. However my target position is always the centre of the graph, if I manually move the motor it will recenter and stop. I'm probably being dense but I can't see how to change the target, the three buttons to the right of the graph don't do anything.

    As I say, probably being dense, what am I missing.

    Regards
    Fred
    Last edited: Jul 2, 2020
    FredBasset, Jul 2, 2020
    #464
  5. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    to use this function out mode must be manual
    Pit, Jul 8, 2020
    #465
  6. FredBasset

    FredBasset Member Gold Contributor

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    Thanks, yeah I worked it out.

    I've got my motor nicely dialled in now, however although values are being written from the SMC3Utils program to the arduino for kp, kd and deadzone for example and being retained when its powered down, this isn't the case for PWM Max, this value is never retained, should it be?

    Thanks
    Fred
    FredBasset, Jul 9, 2020
    #466
  7. MarkusB

    MarkusB Well-Known Member Gold Contributor

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    Exactly this topic already has its own thread:
    https://www.xsimulator.net/community/threads/smc3-saving-settings.14963/
    • Informative Informative x 1
    MarkusB, Jul 9, 2020
    #467
  8. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    yes it should, obviously a new bug of Windowsneverendingstory...I had never ever any issues.
    Pit, Jul 9, 2020
    #468
  9. FredBasset

    FredBasset Member Gold Contributor

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    lol, weird its not affecting all values.

    Can I modify the arduino code to use the value I've worked out and not read from the eprom?
    FredBasset, Jul 9, 2020
    #469
  10. BlazinH

    BlazinH Well-Known Member

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    With additional feedback received from many people vs only one I now know where the issue resides and I'm looking into a fix for it.
    • Like Like x 1
    BlazinH, Jul 9, 2020
    #470
  11. BlazinH

    BlazinH Well-Known Member

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    Untested fix but have high confidence :). Let me know!

    Attached Files:

    • Like Like x 3
    BlazinH, Jul 10, 2020
    #471
  12. FredBasset

    FredBasset Member Gold Contributor

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    Thanks BlazinH, only time for a quick test this morning but it solved my problem with PWM Max not being retained.

    Thanks so much.
    Fred
    • Winner Winner x 1
    FredBasset, Jul 10, 2020
    #472
  13. BlazinH

    BlazinH Well-Known Member

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    Great. Can someone else confirm the fix works for them also so I can move the sketch to the first post?
    BlazinH, Jul 13, 2020
    #473
  14. bbb8cd

    bbb8cd New Member

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    I was having the same issue as @Reece152 and @FredBasset with the version in the first post; rewrote the Arduino with your 8.2 sketch and it seems to have fixed the problem.
    bbb8cd, Aug 24, 2020
    #474
  15. Jorge de Marchena

    Jorge de Marchena Hobbiest Gold Contributor

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    @Pit and @noorbeast

    If i use SABERTOOTH 2x32 i don't need to connect the pot to the motor shaft?
    How many motors could i drive with each SABERTOOTH?

    Using @RufusDufus SMC3 which will be the wiring diagram for 3 motors? How many SABERTOOTH i will require? How many ARDUINOS?

    You both are the BIBLE, your comments will be highly appreciated.

    Thanks
    Jorge de Marchena, Aug 25, 2020
    #475
  16. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Use @BlazinH's modified SMC3 code for Sabertooth, with 2 motors per Sabertooth: https://www.xsimulator.net/communit...ket-serial-pid-motor-driver-for-arduino.9277/
    noorbeast, Aug 25, 2020
    #476
  17. jknajfkae

    jknajfkae New Member

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    Hello. I follow this method, but the two motors cannot rotate in the same direction. Is the potentiometer welding wrong?:(
    jknajfkae, Sep 28, 2020
    #477
  18. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Sound like you need to either reverse the wires to the motor being tested –OR– reverse the +5V and GND wires to your feedback pot for the motor being tested (do not do both).
    • Like Like x 1
    • Informative Informative x 1
    noorbeast, Sep 28, 2020
    #478
  19. BlazinH

    BlazinH Well-Known Member

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    If both motors follow pots correctly then use simtools to reverse motor. Otherwise reverse leads to the motor going opposite.
    BlazinH, Sep 28, 2020
    #479
  20. iLLuac4

    iLLuac4 Active Member

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    Hi. I am ooking into the code and from what i can see this is the one I can use for all the modes. Am i right?
    I can define eather mode 1, 2 or. 3 for motor drivers?
    Because this is the one that has fixed the write values. So basically this is the latest one with all modes defined.
    iLLuac4, Nov 12, 2020
    #480
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